Cabinet type energy storage battery

Abstract

The utility model discloses a cabinet type energy storage battery which comprises a cabinet body, an energy storage battery pack, a refrigeration bottom box, an air inlet fan and an exhaust fan, the energy storage battery pack comprises a plurality of battery blocks and air inlet flow channels and air outlet flow channels located on the two sides of the battery blocks, the tops of the air inlet flow channels are communicated with the air inlet fan, the tops of the air outlet flow channels are communicated with the air exhaust fan, the bottom ends of the air inlet flow channels and the bottom ends of the air outlet flow channels are communicated with the interior of the refrigeration bottom box, and a refrigeration coil is arranged in the refrigeration bottom box. The air inlet flow channels and the exhaust flow channels are staggered, so that air flows along the diagonal directions of the surfaces of the battery blocks, and the heat exchange efficiency is improved. The refrigeration bottom box can provide an extra cold source through a geothermal pump or a compression refrigeration assembly, so that air entering the air inlet flow channel is pre-cooled, the overall temperature control effect is improved, and stable operation of the battery pack in different environments is guaranteed. By optimizing an airflow organization structure, the heat dissipation performance is enhanced, the service life of the energy storage battery is prolonged, the safety of the energy storage battery is improved, and the energy storage battery is suitable for temperature control management of a high-power energy storage system.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a cabinet-type energy storage battery. Background Art

[0002] Energy storage batteries have been widely used in the new energy field, data centers, power grid peak regulation, electric vehicle charging stations and other scenarios. Since energy storage batteries generate a lot of heat during the charging and discharging process, if the heat cannot be dissipated in a timely and effective manner, it may lead to a decline in battery performance, shortened service life, and even the risk of thermal runaway. Therefore, providing efficient heat dissipation and temperature control solutions for energy storage batteries has become an important research direction for improving the safety and stability of energy storage systems.

[0003] The existing cooling methods for energy storage battery cabinets mainly include air cooling and liquid cooling. Among them, air cooling is widely used in small and medium-sized energy storage systems due to its simple structure and low maintenance cost. However, traditional air cooling systems generally have the following technical problems:

[0004] Single airflow path and low heat exchange efficiency: The air duct of traditional energy storage battery cabinets is usually arranged in a unidirectional vertical or horizontal manner. The airflow cannot fully contact the surface of the battery block, resulting in uneven local heat dissipation and affecting the overall heat dissipation efficiency. Due to the influence of air flow rate and temperature gradient, local hot spots are easily formed, which reduces battery performance and may even cause safety problems.

[0005] The air cooling system has limited temperature control capabilities and is difficult to adapt to complex environments: The existing air cooling system mainly relies on the external ambient temperature for natural cooling, which is greatly affected by external environmental factors and is difficult to ensure stable temperature control in high or low temperature environments. In high temperature environments, traditional air cooling systems are difficult to provide sufficient heat dissipation capabilities, and in low temperature environments, the battery temperature may be too low, affecting the charging and discharging efficiency.

[0006] The cooling method is single and cannot provide diversified cooling solutions: Some energy storage systems have introduced liquid cooling technology, but the liquid cooling solution is expensive and requires additional auxiliary equipment such as pumps and pipelines, which increases the complexity of the system and the difficulty of maintenance. Traditional air-cooled energy storage cabinets lack an effective pre-cooling mechanism, and the temperature of the air entering the system is greatly affected by the ambient temperature, making it difficult to ensure that the battery pack can work stably within a wide temperature range.

[0007] In view of this, the existing problems are studied and improved, and a cabinet-type energy storage battery is provided, which aims to improve the heat dissipation efficiency of the energy storage battery by improving the heat dissipation and temperature control system, and ensure stable operation under typical environmental conditions, thereby increasing the service life of the battery pack and the safety of the system. Effect. Utility Model Content

[0008] The utility model aims to solve the technical problems existing in the prior art or related technologies.

[0009] The utility model provides a cabinet-type energy storage battery, and its technical solution is as follows:

[0010] The cabinet type energy storage battery comprises a cabinet body and an energy storage battery pack located inside the cabinet body. The bottom end of the cabinet body is provided with a refrigeration bottom box, the cabinet body surface is provided with a cabinet door, and the top surface of the cabinet body is fixedly installed with an intake fan and an exhaust fan.

[0011] The energy storage battery pack includes a plurality of battery blocks and an inlet flow channel and an exhaust flow channel located on both sides of the battery blocks. The tops of the inlet flow channel and the exhaust flow channel are respectively provided with an air inlet for communicating with an inlet fan and an exhaust port for communicating with an exhaust fan. The bottom ends of the inlet and the exhaust ports are communicated with the interior of a refrigeration bottom box, and a refrigeration coil is provided on the inner side of the refrigeration bottom box.

[0012] In order to improve the heat dissipation effect, the intake and exhaust ducts are arranged in a staggered manner so that the air flows diagonally along the surface of the battery block, increasing the contact time between the air and the surface of the battery block, thereby improving the heat exchange efficiency.

[0013] In addition, in order to enhance the temperature control effect, the refrigeration base box and refrigeration coil can provide additional cold sources through geothermal pumps or compression refrigeration components, so that the air entering the intake air duct is pre-cooled before entering, thereby improving the overall temperature control effect and ensuring the stable operation of the battery pack under different ambient temperatures.

[0014] In order to reduce the impact of the external environment on the heat dissipation performance of the energy storage battery, side sealing plates are fixedly installed on both sides of the energy storage battery pack to seal the air inlet and exhaust port to prevent external airflow from interfering with the air flow inside the intake and exhaust ducts.

[0015] In order to further improve the heat exchange efficiency, fin strips are provided on both sides of the battery block, and the fin strips are parallel to the flow direction of the air flow inside the intake flow channel and the exhaust flow channel, thereby enhancing the heat exchange capacity of the battery block surface and improving the heat dissipation efficiency.

[0016] In addition, the air intake fan and exhaust fan adopt an axial fan structure, and are installed in a relative arrangement so that they supply and exhaust air to both sides respectively, thereby avoiding mutual interference, improving the stability of air flow, and ensuring that the airflow in the cabinet flows evenly along the set path.

[0017] Through the above-mentioned optimized design, the utility model realizes efficient heat dissipation and precise temperature control of the energy storage battery, effectively improves the service life and safety of the battery pack, and is suitable for high-power energy storage application scenarios.

[0018] The beneficial effects achieved by the utility model are:

[0019] 1. In the present invention, the intake flow channel and the exhaust flow channel are arranged in a staggered manner, so that the air flows along the diagonal direction of the battery block surface, increasing the contact time with the battery surface, improving the heat exchange efficiency, and effectively reducing the battery temperature.

[0020] 2. In the present invention, a refrigeration base box and a refrigeration coil are used, and an additional cold source is provided by a geothermal pump or a compression refrigeration component, so that the incoming air is pre-cooled before entering the intake air duct, thereby improving the overall temperature control capability and enhancing the stability of the battery pack in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the energy storage battery pack and refrigeration bottom box structure of one embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of an energy storage battery pack according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the surface structure of a battery block according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of a battery block and the intake and exhaust flow channels on both sides of the battery block according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 100, cabinet body; 110, cabinet door; 120, refrigeration base box; 130, air intake fan; 140, exhaust fan; 121, refrigeration coil;

[0028] 200, energy storage battery pack; 210, battery block; 220, intake flow channel; 230, exhaust flow channel; 240, side sealing plate; 211, fin strip; 221, air inlet; 231, exhaust port. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0030] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0031] The following is combined with Figure 1-Figure 5 A cabinet-type energy storage battery provided by some embodiments of the utility model is described.

[0032] This embodiment provides a cabinet-type energy storage battery, including a cabinet 100 and an energy storage battery pack 200 located inside the cabinet 100. A refrigeration bottom box 120 is provided at the bottom end of the cabinet 100, a cabinet door 110 is provided on the surface of the cabinet 100, and an intake fan 130 and an exhaust fan 140 are fixedly installed on the top surface of the cabinet 100.

[0033] The energy storage battery pack 200 includes a plurality of battery blocks 210 and an inlet flow channel 220 and an exhaust flow channel 230 located on both sides of the battery blocks 210. The tops of the inlet flow channel 220 and the exhaust flow channel 230 are respectively provided with an air inlet 221 and an exhaust port 231, the air inlet 221 is connected to the air inlet fan 130, and the exhaust port 231 is connected to the exhaust fan 140. The bottom ends of the air inlet 221 and the exhaust port 231 are connected to the inside of the refrigeration bottom box 120, and the inner side of the refrigeration bottom box 120 is provided with a refrigeration coil 121 for providing an additional cold source to achieve pre-cooling of the incoming air.

[0034] In this embodiment, the inlet flow channel 220 and the exhaust flow channel 230 are arranged in a staggered manner so that the air flows along the diagonal direction of the surface of the battery block 210, thereby increasing the contact time between the air and the surface of the battery block 210, improving the heat exchange efficiency, and enhancing the overall heat dissipation effect. In addition, a plurality of fin strips 211 are provided on both sides of the battery block 210, and these fin strips 211 are parallel to the air flow direction inside the inlet flow channel 220 and the exhaust flow channel 230, thereby further improving the heat exchange capacity between the air and the surface of the battery block.

[0035] In order to ensure the stability of the airflow in the cabinet 100, the present embodiment adopts an axial fan structure, that is, the air intake fan 130 and the exhaust fan 140 are installed at the top of the cabinet 100 and arranged oppositely so that they supply and exhaust air to both sides respectively to avoid mutual interference and improve the stability of air flow.

[0036] In addition, side sealing plates 240 are fixedly installed on both sides of the energy storage battery pack 200 to seal the air inlet 221 and the air outlet 231 to prevent external air from interfering with the air flow organization inside the cabinet 100, thereby improving the heat dissipation efficiency.

[0037] This embodiment effectively improves the heat dissipation capacity and temperature control effect of the cabinet-type energy storage battery by optimizing the air cooling system and the refrigeration bottom box precooling technology, which can ensure the stable operation of the battery in different environments, extend its service life, and improve the safety of the overall system.

[0038] In another embodiment, the refrigeration coil 121 may adopt a copper coil structure and be connected to a geothermal heat pump or a compression refrigeration component to select a deep formation cold source or a refrigeration system for temperature control according to the use environment or cooling requirements, so that the airflow is cooled inside the refrigeration bottom box 120, thereby improving the heat dissipation capacity and temperature control effect of the battery pack.

[0039] In addition, this embodiment further optimizes the air flow paths inside the intake duct 220 and the exhaust duct 230, so that they present a variable cross-section structure, that is, the intake duct 220 tends to gradually shrink from the air inlet 221 to the bottom, and the exhaust duct 230 tends to gradually expand from the bottom to the exhaust port 231, thereby increasing the air flow rate, enhancing the heat exchange effect, and further optimizing the heat dissipation capacity of the system.

[0040] In summary, the utility model solves the problems of poor heat dissipation, chaotic airflow organization, and low temperature control effect of existing energy storage battery cabinets by optimizing the air cooling structure, refrigeration system, and flow channel layout, and is suitable for the thermal management needs of high-power energy storage systems.

[0041] The working principle and use process of this utility model:

[0042] The design structure of the cabinet-type energy storage battery of the present invention combines active air cooling and bottom refrigeration to ensure efficient heat dissipation and constant temperature control of the energy storage battery pack 200.

[0043] When the energy storage battery is in operation, external air enters the air inlet 221 through the air inlet fan 130, flows downward through the air inlet duct 220, and exchanges heat with the air through the fin strips 211 on both sides of the battery block 210. The heat is transferred from the surface of the battery block 210 to the air flow, then enters the exhaust duct 230, and is finally discharged through the exhaust port 231 and discharged to the outside by the exhaust fan 140, forming a circulating air cooling system.

[0044] At the same time, the refrigeration coil 121 inside the refrigeration base box 120 provides a low-temperature cold source through a geothermal heat pump or a compression refrigeration component, and the airflow at the bottom of the inlet flow channel 220 and the exhaust flow channel 230 exchanges heat with the cooling air inside the refrigeration base box 120, so that the incoming airflow is pre-cooled before passing through the battery block 210, so as to improve the heat dissipation efficiency and reduce the performance degradation of the battery due to the increase in temperature.

[0045] In addition, the side sealing plate 240 is used to seal the inlet flow channel 220 and the exhaust flow channel 230 to prevent external air from directly entering the system and ensure heat dissipation efficiency. The inlet fan 130 and the exhaust fan 140 adopt an independent axial flow fan structure to ensure that heat exchange failure will not be caused by airflow interference.

[0046] The utility model achieves the purposes of efficient heat dissipation, stable temperature control and extended battery life through the above-mentioned structural optimization, and is particularly suitable for temperature control management of high-power energy storage systems.

[0047] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cabinet-type energy storage battery, characterized in that: include: A cabinet (100) and an energy storage battery pack (200) located inside the cabinet (100), wherein a refrigeration bottom box (120) is provided at the bottom end of the cabinet (100), a cabinet door (110) is provided on the surface of the cabinet (100), an air intake fan (130) and an exhaust fan (140) are fixedly installed on the top surface of the cabinet (100), and the energy storage battery pack (200) comprises a plurality of battery blocks (210) and air intake fans (130) located on both sides of the battery blocks (210). A flow channel (220) and an exhaust flow channel (230), wherein the top ends of the intake flow channel (220) and the exhaust flow channel (230) are respectively provided with an intake port (221) for communicating with an intake fan (130) and an exhaust port (231) for communicating with an exhaust fan (140), and the bottom ends of the intake port (221) and the exhaust port (231) are communicated with the interior of a refrigeration bottom box (120), and a refrigeration coil (121) is provided on the inner side of the refrigeration bottom box (120).

2. A cabinet-type energy storage battery according to claim 1, characterized in that: The refrigeration coil (121) is a copper coil structure, and one end of the refrigeration coil (121) is connected to a geothermal heat pump or a compression refrigeration component, so that a deep stratum cold source or a refrigeration system is selected for temperature control according to the use environment or the required cooling efficiency, so that the airflow is cooled inside the refrigeration bottom box (120).

3. A cabinet-type energy storage battery according to claim 1, characterized in that: Side sealing plates (240) are fixedly mounted on both sides of the energy storage battery pack (200) for sealing the air inlet (221) or the air outlet (231) located on the outside.

4. A cabinet-type energy storage battery according to claim 1, characterized in that: The air intake fan (130) and the exhaust fan (140) adopt an axial flow fan structure and are respectively facing two sides to avoid mutual airflow interference.

5. The cabinet-type energy storage battery according to claim 1, characterized in that: A plurality of fin strips (211) located inside the intake flow channel (220) and the exhaust flow channel (230) are provided on both sides of the battery block (210), and the plurality of fin strips (211) are parallel to the flow direction of the airflow inside the intake flow channel (220) and the exhaust flow channel (230).

6. A cabinet-type energy storage battery according to claim 1, characterized in that: The intake flow channels (220) and the exhaust flow channels (230) are arranged in mutually staggered directions, and the airflow directions inside the intake flow channels (220) and the exhaust flow channels (230) are arranged along the diagonal direction of the surface of the battery block (210).

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